[参考译文] MSP-EXP430FR5739：当使用示例 UART 代码(构建于 CCS 并使用 mspdebug 和 gdb 与 msp430-elf-gdb 进行刷写)时、断点未命中(FET：FET 返回 NAK)

https://e2e.ti.com/support/microcontrollers/msp-low-power-microcontrollers-group/msp430/f/msp-low-power-microcontroller-forum/1420171/msp-exp430fr5739-breakpoint-not-hitting-when-using-sample-uart-code-built-on-ccs-and-flashed-using-mspdebug-and-gdb-with-msp430-elf-gdb-fet-fet-returned-nak

工具/软件：mspdebug、msp430-elf-gdb、CCS

我想使用简单的 UART 回送代码对 MSP430评估板进行编程。 我的主机是 Linux (Ubuntu 22.04)。

CCS 在尝试刷写时显示以下错误：

Error initializing emulator:
No USB FET was found

我将使用 CCS 构建代码和 MSPdebug 它们也一起闪存 msp430-elf-gdb . 但不会命中在 main 开始处设置的断点。 下面是一些代码片段：

$: mspdebug rf2500
MSPDebug version 0.22 - debugging tool for MSP430 MCUs
Copyright (C) 2009-2013 Daniel Beer <dlbeer@gmail.com>
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Trying to open interface 1 on 006
Initializing FET...
FET protocol version is 30328680
Set Vcc: 3000 mV
Configured for Spy-Bi-Wire
Device ID: 0x0381
  Code start address: 0xc200
  Code size         : 15872 byte = 15 kb
  RAM  start address: 0x1c00
  RAM  end   address: 0x1fff
  RAM  size         : 1024 byte = 1 kb
Device: MSP430FR5739
Number of breakpoints: 3
fet: FET returned NAK
warning: device does not support power profiling
Chip ID data: 03 81 24 [FRAM]

Available commands:
    =           erase       isearch     power       save_raw    simio       
    alias       exit        load        prog        set         step        
    break       fill        load_raw    read        setbreak    sym         
    cgraph      gdb         md          regs        setwatch    verify      
    delbreak    help        mw          reset       setwatch_r  verify_raw  
    dis         hexout      opt         run         setwatch_w  

Available options:
    color                       gdb_loop                    
    enable_bsl_access           gdbc_xfer_size              
    enable_locked_flash_access  iradix                      
    fet_block_size              quiet                       
    gdb_default_port            

Type "help <topic>" for more information.
Use the "opt" command ("help opt") to set options.
Press Ctrl+D to quit.

(mspdebug) prog ~/eusci_a_uart_ex1_loopbackAdvanced/Debug/eusci_a_uart_ex1_loopbackAdvanced.out
Erasing...
warning: not attempting erase of FRAM device
Programming...
Writing  126 bytes at c200 [section: .text]...
Writing    2 bytes at ffce [section: RTC]...
Writing    2 bytes at ffd0 [section: PORT4]...
Writing    2 bytes at ffd2 [section: PORT3]...
Writing    2 bytes at ffd4 [section: TIMER2_B1]...
Writing    2 bytes at ffd6 [section: TIMER2_B0]...
Writing    2 bytes at ffd8 [section: PORT2]...
Writing    2 bytes at ffda [section: TIMER1_B1]...
Writing    2 bytes at ffdc [section: TIMER1_B0]...
Writing    2 bytes at ffde [section: PORT1]...
Writing    2 bytes at ffe0 [section: TIMER1_A1]...
Writing    2 bytes at ffe2 [section: TIMER1_A0]...
Writing    2 bytes at ffe4 [section: DMA]...
Writing    2 bytes at ffe6 [section: USCI_A1]...
Writing    2 bytes at ffe8 [section: TIMER0_A1]...
Writing    2 bytes at ffea [section: TIMER0_A0]...
Writing    2 bytes at ffec [section: ADC10]...
Writing    2 bytes at ffee [section: USCI_B0]...
Writing    2 bytes at fff0 [section: USCI_A0]...
Writing    2 bytes at fff2 [section: WDT]...
Writing    2 bytes at fff4 [section: TIMER0_B1]...
Writing    2 bytes at fff6 [section: TIMER0_B0]...
Writing    2 bytes at fff8 [section: COMP_D]...
Writing    2 bytes at fffa [section: UNMI]...
Writing    2 bytes at fffc [section: SYSNMI]...
Writing    2 bytes at fffe [section: .reset]...
Writing    4 bytes at ff80 [section: $fill000]...
Writing    4 bytes at ff84 [section: $fill001]...
Writing    8 bytes at ff88 [section: $fill002]...
Done, 192 bytes total
(mspdebug) gdb
Bound to port 2000. Now waiting for connection...
Client connected from 127.0.0.1:34646
Clearing all breakpoints...
Reading registers
Reading    1 bytes from 0xc200
Reading    1 bytes from 0xc201
Reading    1 bytes from 0xc202
Reading    1 bytes from 0xc203
Reading    1 bytes from 0xc204
Reading    1 bytes from 0xc205
Reading    1 bytes from 0xc200
Reading    1 bytes from 0xc201
Reading    1 bytes from 0xc202
Reading    1 bytes from 0xc203
Reading    1 bytes from 0xc204
Reading    1 bytes from 0xc205
Reading    2 bytes from 0xc200
Breakpoint set at 0xc200
Running

$: msp430-elf-gdb ~/eusci_a_uart_ex1_loopbackAdvanced/Debug/eusci_a_uart_ex1_loopbackAdvanced.out
GNU gdb (Mitto Systems Limited - msp430-gcc 9.3.1.11) 9.1
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <gnu.org/.../gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "--host=x86_64-pc-linux-gnu --target=msp430-elf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<www.gnu.org/.../>.
Find the GDB manual and other documentation resources online at:
    <www.gnu.org/.../>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ~/eusci_a_uart_ex1_loopbackAdvanced/Debug/eusci_a_uart_ex1_loopbackAdvanced.out...
(gdb) target remote localhost:2000
Remote debugging using localhost:2000
0x1ffeed9c in ?? ()
(gdb) break main
Breakpoint 1 at 0xc200: file ../eusci_a_uart_ex1_loopbackAdvanced.c, line 67.
(gdb) continue
Continuing.

您能提供一些可能缺失的内容吗？ 是它与什么有关 FET：FET 返回 NAK
警告：器件不支持功耗分析 放在上面的 mspdebug 命令中？